Knowledge Base

The above picture shows the SPice10205 with the main items of interest labeled.

The two connectors in the middle of the board are for connecting your electrodes. There are two pins per channel, one for the active electrode (numbered with the channel number) and one for a ground (0V) connection. All 0V pins are connected together on the board and to the 0V power supply pin on the host controller board. The electrodes, and the use of the 0V connections, are explained in SPice 10205: About water level detection

The component labeled “V” is the sensitivity adjustment. It controls the sensitivity on all channels at the same time.

The item marked “L” is a link that enables/disables channel 6. It is shown in the disabled position. To enable channel 6 it must be installed so it bridges the two gold pins. The reason for the link is that conductivity channel 6 uses the same pin on the controller board’s processor chip that is used for generating a thermistor drive voltage on the main board (SL99 or MMi99, this does not apply to MS12). If you are using the main board’s analog input in thermistor mode, then you cannot use conductivity channel 6 on the SPice10205, and the link must be removed.